package oj;

import java.util.Scanner;

public class Day30S {
    public static void main(String[] args) {
        Scanner  sc=new Scanner(System.in);
        while (sc.hasNext()){
            int n=sc.nextInt();
            int count=0;
            for (int i = 2; i <Math.sqrt(n) ; i++) {
                if(n%i==0){
                    while (n%i==0){
                        n=n/i;
                    }
                    count++;
                }
            }
            if(n!=1){
                count++;
            }
            System.out.println(count);
        }
    }
}
